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Flat Bar Weight Calculator
Updated 8 November 2026Checked against IS 1731, IS 2062:2011How we check
Find the weight of MS flat bars (patti) in kg per meter, per 6 m and per 20 ft. Enter the width and thickness, or use the flat bar weight chart below.
Flat Bar Weight Calculator
All results are in kg.
MS Flat Bar Weight Chart
| Size (mm) | kg per m | Per 6 m | Per 20 ft |
|---|---|---|---|
| 25 × 3 | 0.589 | 3.53 | 3.59 |
| 25 × 5 | 0.981 | 5.89 | 5.98 |
| 25 × 6 | 1.177 | 7.06 | 7.18 |
| 32 × 5 | 1.256 | 7.54 | 7.66 |
| 32 × 6 | 1.507 | 9.04 | 9.19 |
| 40 × 5 | 1.570 | 9.42 | 9.57 |
| 40 × 6 | 1.884 | 11.30 | 11.48 |
| 40 × 8 | 2.512 | 15.07 | 15.31 |
| 50 × 5 | 1.962 | 11.77 | 11.96 |
| 50 × 6 | 2.355 | 14.13 | 14.36 |
| 50 × 8 | 3.140 | 18.84 | 19.14 |
| 50 × 10 | 3.925 | 23.55 | 23.93 |
| 65 × 6 | 3.061 | 18.37 | 18.66 |
| 65 × 8 | 4.082 | 24.49 | 24.88 |
| 75 × 6 | 3.532 | 21.20 | 21.53 |
| 75 × 8 | 4.710 | 28.26 | 28.71 |
| 75 × 10 | 5.887 | 35.32 | 35.89 |
| 100 × 6 | 4.710 | 28.26 | 28.71 |
| 100 × 8 | 6.280 | 37.68 | 38.28 |
| 100 × 10 | 7.850 | 47.10 | 47.85 |
| 100 × 12 | 9.420 | 56.52 | 57.42 |
Flat Bar Weight Formula
Example: a 50 × 6 mm flat bar weighs 50 × 6 × 0.00785 = 2.355 kg/m, or 14.13 kg for 6 m.
For galvanised flats and earthing strips, see the GI flat weight chart.
Frequently Asked Questions
What is the weight of a 50 × 6 MS flat?
A 50 × 6 mm MS flat bar weighs 2.355 kg per meter, or about 14.13 kg for a 6 m length.
What is the weight of a 25 × 5 MS flat?
A 25 × 5 mm flat weighs about 0.981 kg per meter, or 5.89 kg for 6 m.
What is the weight of a 40 × 6 MS flat?
A 40 × 6 mm flat weighs about 1.884 kg per meter, or 11.30 kg for 6 m.
How do I calculate flat bar weight?
Multiply width (mm) × thickness (mm) × 0.00785 to get kg per meter, then multiply by the length in meters.
How do I calculate SS flat bar weight?
Choose "Stainless Steel 304" in the calculator, or multiply width × thickness × 0.00793.
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